Bold, Italic, and Fancy Text for Social Media

You're writing an Instagram bio and want one line in bold. Or you're composing a LinkedIn post and want to emphasize a key phrase with italics. There's no formatting toolbar — just a plain text box. So how do people get 𝗯𝗼𝗹𝗱, 𝘪𝘵𝘢𝘭𝘪𝘤, and s̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ text on platforms that don't support rich formatting?

The answer is Unicode. And it's simpler than you think.

How Unicode Text Formatting Works

Most social media platforms accept plain text only — no HTML, no Markdown, no rich text formatting. But they do support Unicode, the universal character encoding standard that covers virtually every writing system on Earth.

Unicode includes multiple alphabets that look like styled versions of regular Latin letters. For example, the "Mathematical Bold" block contains characters like 𝐀 𝐁 𝐂 that look like bold letters but are actually distinct Unicode code points:

Regular:  A  B  C  D  E
Bold:     𝗔  𝗕  𝗖  𝗗  𝗘
Italic:   𝘈  𝘉  𝘊  𝘋  𝘌

When you type "hello" in a bold text generator, it replaces each letter with its Mathematical Bold equivalent. The platform sees different characters, but your eyes see bold text. Clever, right?

Generate bold text instantly with the Bold Text generator.

Available Styles

Bold

𝗕𝗼𝗹𝗱 𝘁𝗲𝘅𝘁 stands out in a feed of plain text. Use it for:

• Key phrases in social media posts
• Section "headers" in long LinkedIn posts
• Bio highlights on Instagram or Twitter/X
• Product names or important terms

The Bold Text tool converts your text using Unicode Mathematical Bold characters, which render on virtually every device and platform.

Italic

𝘐𝘵𝘢𝘭𝘪𝘤 𝘵𝘦𝘹𝘵 adds subtle emphasis. It's the classic way to indicate titles, foreign words, or a shift in tone. In social media, it works well for:

• Book, movie, or song titles
• Quoted phrases or thoughts
• Soft emphasis (contrast with bold's strong emphasis)
• Stylistic flair in bios

Create italic text with the Italic Text generator.

Strikethrough

S̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ text uses Unicode combining characters — specifically, the "combining long stroke overlay" (U+0336) placed after each character. It's great for:

• Humor and self-correction: "This meeting could have been an ~~email~~ Slack message"
• Showing price changes: "~~$99~~ $49"
• Conveying a change of mind or ironic tone
• Visual emphasis through contrast

The Strikethrough tool handles the combining character insertion for you.

Underline

U̲n̲d̲e̲r̲l̲i̲n̲e̲d̲ text uses the "combining low line" character (U+0332). Since underlines usually indicate hyperlinks on the web, use this sparingly on social media to avoid confusion. It works best for:

• Highlighting key terms or definitions
• Creating visual separation in longer posts
• Decorative emphasis in bios

Generate it with the Underline Text tool.

Small Text (Subscript/Superscript)

ˢᵐᵃˡˡ ᵗᵉˣᵗ uses Unicode superscript and subscript letter forms. It creates an aesthetic that's become popular for:

• Instagram bios and captions
• Aesthetic Tumblr-style posts
• Subtle annotations or asides
• Creating visual hierarchy without actual headings

The Small Text converter maps each letter to its superscript equivalent.

Wide Text (Fullwidth)

Ｗｉｄｅ　ｔｅｘｔ uses fullwidth Unicode characters, originally designed for East Asian typography where Latin characters needed to match the width of CJK characters. Each letter takes up twice the normal space. It creates a distinctive aesthetic for:

• Vaporwave-inspired content
• Eye-catching headers in posts
• Artistic or ironic emphasis
• Standing out in comments sections

The Wide Text tool converts standard ASCII to fullwidth equivalents.

Upside Down

˙ʇxǝʇ uʍop ǝpᴉsdn is pure entertainment. It maps each character to a Unicode equivalent that looks like its inverted form (ɐ for a, q for b, etc.). It won't win any typography awards, but it's fun for:

• Playful social media posts
• Novelty bios
• Getting attention in comment sections
• Confusing your friends

Flip your text with the Upside Down Text generator.

Where Each Style Works

Not every platform renders Unicode formatting characters the same way. Here's what you can expect:

| Platform | Bold/Italic | Strikethrough | Small | Wide | Upside Down | |----------|------------|---------------|-------|------|-------------| | Twitter/X | Yes | Yes | Mostly | Yes | Yes | | Instagram | Yes | Yes | Mostly | Yes | Yes | | LinkedIn | Yes | Yes | Partial | Yes | Yes | | Facebook | Yes | Yes | Mostly | Yes | Yes | | TikTok | Yes | Yes | Partial | Yes | Yes | | YouTube | Yes | Yes | Mostly | Yes | Yes | | Email subjects | Varies | Varies | Varies | Usually | Usually |

Bold and italic (Mathematical alphanumeric symbols) have the best cross-platform support because they're part of a well-established Unicode block. Combining characters (strikethrough, underline) depend on the font and renderer — most modern devices handle them fine, but you might see inconsistencies on older systems.

Tips for Effective Use

Don't overdo it. A post that's entirely bold loses the emphasis. Use formatted text for the 2-3 most important words or phrases. The contrast between plain and formatted text is what creates emphasis.

Test before posting. Copy your formatted text and preview it on the target platform. Some characters might not render as expected, especially small text which has incomplete Unicode coverage for certain letters.

Consider accessibility. Screen readers may pronounce Unicode mathematical symbols differently from regular letters. A screen reader might say "mathematical bold capital A" instead of just "A." For critical content, don't rely solely on visual formatting to convey meaning.

Combine sparingly. Bold + italic + strikethrough in the same post looks messy. Pick one style for emphasis and stick with it within a single piece of content.

Numbers and punctuation. Most Unicode text styles cover A-Z and a-z but may not have equivalents for numbers or special characters. The unconverted characters will appear in regular style, which usually looks fine in context.

The Copy-Paste Workflow

Using Unicode text formatting is simple:

1. Type or paste your text into one of the formatting tools
2. Copy the converted output
3. Paste it directly into any text field — social media post, bio, comment, message
4. The formatting travels with the text because it's just Unicode characters

No browser extensions, no special apps, no accounts needed. The characters are part of the text itself, so they'll display anywhere Unicode is supported (which is essentially everywhere).

Try It Yourself

Create formatted text for any platform:

• Bold Text — strong emphasis for key phrases
• Italic Text — subtle emphasis and titles
• Strikethrough — corrections and humor
• Underline Text — highlighting and decoration
• Small Text — aesthetic superscript style
• Wide Text — fullwidth aesthetic
• Upside Down Text — fun and novelty

All processing happens in your browser. Your text never leaves your device.